package org.tinaelle.servlet.utils.json;

/*
 * Copyright (c) 2002 JSON.org
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 * 
 * The Software shall be used for Good, not Evil.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import java.util.Iterator;

/**
 * Convert a web browser cookie list string to a JSONObject and back.
 * 
 * @author JSON.org
 * @version 2
 */
public class CookieList {

	/**
	 * Convert a cookie list into a JSONObject. A cookie list is a sequence of name/value pairs. The names are separated
	 * from the values by '='. The pairs are separated by ';'. The names and the values will be unescaped, possibly
	 * converting '+' and '%' sequences.
	 * 
	 * To add a cookie to a cooklist, cookielistJSONObject.put(cookieJSONObject.getString("name"),
	 * cookieJSONObject.getString("value"));
	 * 
	 * @param string
	 *            A cookie list string
	 * @return A JSONObject
	 * @throws JSONException
	 */
	public static JSONObject toJSONObject(final String string) throws JSONException {
		final JSONObject o = new JSONObject();
		final JSONTokener x = new JSONTokener( string );
		while ( x.more() ) {
			final String name = Cookie.unescape( x.nextTo( '=' ) );
			x.next( '=' );
			o.put( name, Cookie.unescape( x.nextTo( ';' ) ) );
			x.next();
		}
		return o;
	}

	/**
	 * Convert a JSONObject into a cookie list. A cookie list is a sequence of name/value pairs. The names are separated
	 * from the values by '='. The pairs are separated by ';'. The characters '%', '+', '=', and ';' in the names and
	 * values are replaced by "%hh".
	 * 
	 * @param o
	 *            A JSONObject
	 * @return A cookie list string
	 * @throws JSONException
	 */
	public static String toString(final JSONObject o) throws JSONException {
		boolean b = false;
		final Iterator<String> keys = o.keys();
		String s;
		final StringBuffer sb = new StringBuffer();
		while ( keys.hasNext() ) {
			s = keys.next().toString();
			if ( !o.isNull( s ) ) {
				if ( b ) {
					sb.append( ';' );
				}
				sb.append( Cookie.escape( s ) );
				sb.append( "=" );
				sb.append( Cookie.escape( o.getString( s ) ) );
				b = true;
			}
		}
		return sb.toString();
	}
}
